Beautiful game! Serene music, smooth feel to the controls - but whew, was it hard to figure out whether my "jump" would register on time before falling off an edge :/ I spent most of my time on this longgg corridor (that I think you may want to consider another checkpoint in the middle of, difficulty wise) and right now the furthest I've made it is TWO BLOCKS AWAY from the end of this section, where I've never manged to make this jump to the skinny platform. I do think this game is geared towards a seasoned gamer looking for a challenge; that being said, you could also consider the casual/unexperienced player in your design (I didn't spot a sign that says use WASD, Space and Shift, just like the one you have for press Ctrl to Spin).
I'm having a really fun time with this one!! Very lovely job - I love the setting and the player design as well :)
